17
TROUBLESHOOTING
16
TROUBLESHOOTING
b. AV1 E-E
No sound in AV1 E-E mode.
NO
Check Input AV1 JACK
Is Audio signal at IC251 pin#6, 7?
Is Audio signal output at IC601 pin
#3, 13?
Check IC501.
Is Audio signal output at IC251
pin#16,17?
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Is 5V obtained at IC251 pin#40?
Replace IC251.
YES
YES
Is 12V obtained at IC251 pin#34?
NO
YES
Check POWER circuit.
YES
Replace IC601.
YES
Comparing with switching table, are SWA, B CTL SIGNAL
right at IC601 pin #9,10?
NO
Check Output JACK.
YES
YES
NO
c. AV2 E-E
No sound in AV2 E-E mode.
NO
Check Input AV2 JACK
Is Audio signal at IC251 pin#8, 9?
Is Audio signal output at IC601 pin
#3, 13?
Check IC501.
Is Audio signal output at IC251
pin#19, 20?
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Is 5V obtained at IC251 pin#40?
Replace IC251.
YES
YES
Is 12V obtained at IC251 pin#34?
NO
YES
Check POWER circuit.
YES
Replace IC601.
YES
Comparing with switching table, are SWA, B CTL SIGNAL
right at IC601 pin #9,10?
NO
Check Output JACK.
YES
YES
NO
Summary of Contents for HV-DX4EV
Page 1: ...Service Manual Service Manual MODEL HV DX4SP HV DX4EV Apr 2005 SANYO Electic Co Ltd ...
Page 15: ...26 CIRCUIT DIAGRAM 1 POWER SUPPLY CIRCUIT DIAGRAM ...
Page 16: ...27 CIRCUIT DIAGRAM 2 SERVO SYSCON CIRCUIT DIAGRAM DVD REC VCR ...
Page 17: ...28 CIRCUIT DIAGRAM 3 VIDEO AUDIO CIRCUIT DIAGRAM ...
Page 18: ...29 4 HiFi SW INPUT CIRCUIT DIAGRAM CIRCUIT DIAGRAM ...
Page 19: ...30 CIRCUIT DIAGRAM 5 PIF CIRCUIT DIAGRAM ...
Page 20: ...31 CIRCUIT DIAGRAM 6 DVD CIRCUIT DIAGRAM ...
Page 21: ...32 CIRCUIT DIAGRAM ...
Page 22: ...33 CIRCUIT DIAGRAM ...
Page 23: ...34 CIRCUIT DIAGRAM ...
Page 24: ...35 PCB CIRCUIT BOARD 1 1 VCR MAIN ...
Page 25: ...36 PCB CIRCUIT BOARD 1 2 POWER ...